Soft suspension bicycle
Patent 4997197 Issued on March 5, 1991. Estimated Expiration Date: 
May 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1077105 1333449 2515380 2976056 Bicycle Bicycle suspension Bicycle frame Wheel suspension system for motorcycles Patent #: 4744434 InventorApplicationNo. 348874 filed on 05/08/1989US Classes:280/275, Yielding280/124.177, Elastomeric spring280/277, Independent wheel mounting280/283, Yielding280/284Rear forksExaminersPrimary: Marmor, Charles A.Assistant: Boehler, A. M. Foreign Patent References
International ClassB62K 025/22AbstractA soft suspension bicycle including a pivotal front wheel mounted fork pivotally connected to the steerable fork and a rear pivotal structure having three pivotally interconnected cooperating components including an intermediate fork connected to a pivotal rear wheel mounted fork in adjacent relation to the axis of the rear wheel, the pivotal front wheel mounted fork and the pivotal intermediate fork are scalene quad triangular forks structurally efficient in the verticcal and transverse planes, and having front and rear brakes to produce a frame shifting torque simultaneously with braking, both front and rear pivotal comonents are suspended from the bicycle frame with resilient elastic suspenders and include front and rear indicators for indicating optimum tension of the suspenders after tension adjustments according to the weight of a rider. | |
